All the schematics you'll find below are quite large, enough to keep the value of the
components readable. They will certainly not fit completely onto your screen, but you can
scroll through or save the GIF on your disk (click with the right button of your mouse ON
the schematic and choose the option "Save Image As") and print it with a common
bitmap program.

I haven't tried every schematic listed below, so I can't assure you of the quality of
each of them nor that they are error-free.

In formulas, if not mentioned otherwise, the units are the main ones: Farad, Ohm,
Henry, ...

!!! Warning !!! Tubes involve high voltages. High voltages are not a
joke, pay particularly attention to capacitors: they keep their high voltages a long time
after you switch off your amp.
When touching the inside of an amp you've just switched off, always use one hand and
only one hand at a time.Never short-circuit a charged capacitor, the power is huge and dangerous
!